Gearing.



PATENTED JAN. 17, 1905.,

e. NELSON;

GEARING.

APPLICATION FILED FEB. 17.1904.

3 SHEETS- 83117311.

' q a la yl elsan witness I Suueufoz APPLICATION FILED FEB. 17,1904.

I 3 SHEETS-SHEET 3.-

' v i v nwnfoz I q u'efaavzlson. q/vihmoaca U IT-ED STATES ratented.January 17, 1905.

PATENT OFFICE.

GEARING.

SPECIFICATION forming part of Letters Patent No. 780,375, dated January17, 1905.

Application filed February 17, 1904.

To all whom it may concern:

Be it known'that I, GusrAn NELSON, a citizen of the United States,residing at St. Louis Park, in the county of Hennepin and State ofMinnesota, have lnvented new and useful Improvements'in Gearing, ofwhich the following is a specification.

My invention relates to new and useful improvements in steeringandpropelling mechanism for boats; and its object is to provide compact andefficient means whereby a boatcan be steered without the employment of arudder, such steering operation being produced by means which arealsoemployed for regulating the speedof the boat.

With the above and other objects in view the invention consists of abody having floats at the sides thereof,-each float being inclosed by aworm and the two worms being arranged opposite to each other. Thesefloats are rotated by mechanism interposed between them and adiflerential gear of novel construction whereby the two shafts connectedto the gear can be rotated at the same or different speeds and wherebythe speed of the shaft can be regulated.

The invention also consists in the further novel construction andcombination of parts hereinafter more fully described and claimed,

and illustrated in the accompanying drawings, showing the preferred formof my invention,

\ and in Which ism thereon. of, showing the'means for transmittingmotion from the power-shaft to the revoluble Figure. 1 is asideelevation of aboat having my improved steering and propelling mechan-Fig. 2 1s an end elevation therefloats. Fig. 3 is an enlarged transversesection through the differential gear. Flg. & 18

Fig. 3; and Figs. 5 and Referring to the figures by numerals ofreference, 1 is a platform having hangers 2 and 3 extending fromthefront and'rear thereof, and within each pair of hangers is journaleda shaft 4, to which is secured a revolu-' ble float 5, preferablytapered toward the front end thereofand formed of sheet metal. Eachfloat is inclosed by a worm 6, and the l of the yokes.

era No. 193,974..

worms on the two floats are oppositely arranged. A beveled gear 7 issecured to the rear end of each float and meshes with another gear, 8,arranged at the lower end of an upright shaft 9, suitably connected tothe platform and having a beveled gear 10 at its upper end. These gears10 mesh with gears 11,

connected to the outer ends of horizontal shafts 12 and 12. These shaftsare arranged in alinement with each other, and their inner ends arerevolubly mounted within acollar 13, having recesses 14 in the peripherythereof.

This collar is also secured to a cylindrical hub 15, which incloses thetwo shafts 12 and 12,

and revolubly mounted within the hub are pins 16, which project into therecesses 14 and are journaled in the inner ends of these recesses.Revolubly mounted upon the pins and keyed or otherwise secured to themare gears 17 which are located within the recesses. Gears 18 are alsosecured to the pins at points outside of the hub. Gears 19 are securedto the inner portions of the shafts, and said gears mesh with oppositesides of the gears 17 Flanges 20 are arranged abouthub 15 and havegrooves 21 in their inner faces, in which are arranged rings 22, formedof coiled springs. These rings flt within grooves 23, formed within theouter faces of clamping-rings 2 1, which inclose the hub and arearranged at opposite sides of the gears 18. Toothed rings 25 are locatedat opposite sides of the gears 18 and mesh therewith, and each of theserings has a concentric flange 26, and the two flanges are adapted tonormally contact. Rollers 27 are interposed between these flangesand-the rings 24:. Angular annular extensions 28 are formed integralwith the flanges 26 and produce a groove 29 therebetween, in which arearranged oppositely-disposed similar friction-rings 30, having lugs 31projecting from opposite sides thereof.

These-lugs are adapted to engage the ends of similar yokes 32, which arepivoted to one end of a lever 33 and have inwardly-extend ing armspivoted to links 35. These links are pivotally connected to a sleeve 36,'slidably mounted upon the lever and having a spring 37 bearingthereagainst, so as to hold the sleeve 36 normally pressed toward thepivots A toothed segment 38 is piv- 1 .suitable motor, which oted to thelever adjacent its handle 39 and is connected, by means of rods 40, withthe sleeve 36. Another toothed segment 41 meshes with segment 38 and hasan arm 42 extending therefrom and pivoted to the lever adjacent thehandle 39. It will thus be seen that by drawing the arm 42 toward handle39 the segment 41 will cause segment 38 to retate upon its pivot, andthereby draw the sleeve 36 longitudinally on lever 33 and pull the arms34 of the yoke toward each other, so as to spread apart the ends of theyokes.

ever 33 is pivotally mounted upon a standard 43, extending upward fromthe platform 1, and is so mounted swung laterally in either direction.

A sprocket 44 is secured to the hub 15 and is adapted to receive rotarymotion from any may be arranged on platform 1, but which is not shown.As the hub 15 is secured to the sprocket, it is obvious that the samewill rotate therewith, as will also the collar 13. As the resistanceoffered by both of the rings 25 to the gears 18 is the same, it will beunderstood that these rings will be rotated in unison with the hub 15and the gears 17, and as the two gears 19 mesh with gears 17 both of theshafts l2 and 12 will be rotated together. When itis desired to retardthe rotation of the shafts 12 and 12, this can be readily done bydrawing the arm 42 toward the handle 39, so as to spread the two yokes32 apart. As these yokes engage the lugs 31, friction-rings 30 will bespread laterally into contact with the annular extensions 28 and willbear against them equally, and thereby retard their rotation, andconsequently the rotation of the collar 13 and the parts connectedthereto, as well as the shafts 12 and 12. If it is desired to rotate theshafts 12 and 12 in opposite directions, the lever33 is swung laterallyin the proper direction, so as to depress the friction-rings 30 intocontact with one of the annularextensions 28. This extension will nearlyor entirely stop revolving, according to the pressure exerted thereon,and therefore the gears 18 will. be caused torotate upon the ring 25,connected to said contacted extension, and pin 16 will revolve therewithand cause the two gears 19 to rotate in opposite directions. Thespring-rings 22 cause the rings 24 to bear at all times upon the rollers27 to hold them in contact with flanges 26, and therefore a certainamount of lateral movement of said flanges and their angular extensionsis permitted. As the shafts 12 and 12 are connected by the gears 10 and11 and shaft 9 and gears 8 and 7 with the floats 5, it will beunderstood that when the two shafts 12 and 12 are rotating at the samespeed and in the same direction the two floats 5 will also be rotated,and the worms 6 thereon willcontact with the water and propel the boatforward. When the shafts 12 and 12 are rotated in opposite directions inthe manner described, the same as to permit it to be result will beproduced upon the floats 5, and therefore the course of the boat can bechanged at will.

It will be seen that by providing mechanism such as herein described, itis unnecessary to employ a multiplicity of levers, and a single lever isall that is necessary to both regulate the speed of the boat and tosteer the same.

In the foregoing description I have shown the preferred form of myinvention; but I do not limit myself thereto, as I am aware thatmodifications may be made therein without departing from the spirit orsacrificing any of the advantages thereof, and I therefore reserve theright to make such changes as fairly fall within the scope of myinvention.

Having thus described the invention, what is claimed as new is 1. Thecombination with oppositely-extending shafts having gears at theadjoining ends thereof; of gearsinterposcd between said lastmentionedgears and meshing therewith, a second set of gears revoluble with theinterposed gears, oppositely-disposed toothed rings engaging the secondset of gears, means for automatically holding said rings in frictionalcontact, and mechanism for controlling the retation of the rings.

2. The combination with alining shafts having gears thereon, and gearsinterposed between the gears of the shaft and meshing therewith; of asecond set'of gears revoluble with the interposed gears,oppositely-disposed toothed rings meshing with said second set of gears,spring-pressed rollers bearing upon the rings for holding them normallyin contact, friction-rings interposed between the toothed rings, andmeans for shifting said frictionrings into contact with either or bothof the toothed rings.

3. The combination with alining shafts having gears adjacent the endsthereof; of a hub inclosing the gears and shaft, pins revolubly mountedwithin the hub, gears at the ends thereof, the gears at one end of thepins meshing with the gears on the shafts, oppositelydisposed toothedrings meshing with the other gears on the pins, spring-pressed ringssupported by the hub at opposite sides of the toothed rings,friction-rollers interposed be tween said rings, friction-ringsinterposed be tween the toothed rings, and means for forcing the ringsinto contact with one or both of the toothed rings.

4'. The combination with oppositely disposed alining shafts havingoppositely-disposed gears at the adjoining ends thereof; of a collarloosely mounted upon the shafts and between the gears, a hub integralwith the collar, pins revolubly mounted within the hub and collar, gearssecured to the pins, the gears 'at one end thereof meshing with thegears on the shaft, oppositely-disposed toothed rings meshing with theother gears, flanges secured to the hub, rings interposed between theflanges, springs interposed between the flanges and rings,friction-rollers between said rings and the toothed rings,friction-rings interposed between the toothed rings, and means forforcing said friction-rings into contact with either or both of thetoothed rings.

5; -The combination with alining shafts having gears thereon, and gearsinterposed tween the gears on the shaft and meshing therewith; of asecond set of gears revoluble with the interposed gears,oppositely-disposed toothed rings meshing with said second set of gears,spring-pressed rollers bearing upon the rings for holding them normallyin contact,

friction-rings interposed between the toothed 5 yokes simultaneously inopposite directions.

In testimonyv whereofI affix my signature in 20 presence oi twowitnesses.

GUSTAF NELSON.

- Witnesses:

OHAs. WESTBERG, H. P. HOFSTRAND.

